Music Tech magazine has a Reason 5 issue out. There are some great articles for beginners and pros a like. The included DVD has a bunch of video tutorials. I got it for around $20 at my local Borders. I consider it money well spent.

Most of the tutorials in the mag and on the DVD are beginner-oriented, but I have found that no matter how much you think you know, you can always pick up a few tips here and there.